topic Re: Unix Command needed in Operating System - HP-UX

Unix Command needed

Bokoko — Wed, 27 Nov 2002 09:23:59 GMT

I'm willing to use the "ps" command in order to detect a used/locked file in a specific directory but this command shows/displays me the similar files used by some processes. Would you please assist me in this case.

I've used this command:

$ ps -aef | grep PAYXTR.LIS
===============================================
ebokoko 21248 21232 0 10:22:15 pts/tk 0:00 vi /consult/6/runs/users/S.O./PAYXTR.LIS

con6 21156 20746 0 10:18:04 pts/tf 0:00 vi /consult/6/users/S.O./PAYXTR.LIS

root 21227 21192 0 10:20:53 pts/tj 0:00 vi PAYXTR.LIS
===============================================

Thanks.

E.Armand-Blaise

Re: Unix Command needed

Tom Geudens — Wed, 27 Nov 2002 09:27:53 GMT

Hi,
Are you perhaps looking for "fuser -cu" ?
Check "man fuser".

Regards,
Tom

Re: Unix Command needed

Armin Feller — Wed, 27 Nov 2002 09:29:34 GMT

Hi,

perhaps the LSOF utility will help:

$ lsof +aL1 /usr

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
tail 2790 root 0r VREG 64,0x4 13394720 97 /home (/dev/vg00/lvol4)

You can download it by:
http://hpux.asknet.de/hppd/hpux/Sysadmin/lsof-4.64/

Or perhaps the FUSER command helps also?! ;-)

Please try it.

Best regards,
Armin

Re: Unix Command needed

Vicente Sanchez_3 — Wed, 27 Nov 2002 09:29:44 GMT

Hi,

You can use fuser -u file_name. This shows the users and pids that have access to the file/directory.

HTH, Vicente.

Re: Unix Command needed

Robin Wakefield — Wed, 27 Nov 2002 09:31:10 GMT

Hi,

Try using fuser to list processes that have the file open, e.g.

# fuser /var/adm/syslog/syslog.log
/var/adm/syslog/syslog.log: 410o

# ps -fp 410
UID PID PPID C STIME TTY TIME COMMAND
root 410 1 0 Nov 24 ? 0:01 /usr/sbin/syslogd -D
#

Rgds, Robin

Re: Unix Command needed

T G Manikandan — Wed, 27 Nov 2002 09:33:51 GMT

you can determine what files the process has open using lsof

check the lsof for 64 bit here

ftp://coast.cs.purdue.edu/pub/tools/unix/sysutils/lsof/binaries/hpux/

Thanks

Re: Unix Command needed

Bokoko — Wed, 27 Nov 2002 09:37:19 GMT

Thank you for your reply.

The preview command "fuser" is looking for a file system mounted on this file "PAYXTR.LIS". However, how to know exactly that a file is locked by a user (file in a specific directory).?

Re: Unix Command needed

Bokoko — Wed, 27 Nov 2002 09:59:36 GMT

I,m still busy to test the "fuser" command and the "ps -fp" one.

For the utility, I can't use it because I'm running the B.11.00 32 bits.

Many thanks.

Re: Unix Command needed

Armin Feller — Wed, 27 Nov 2002 10:04:32 GMT

Hi,

if you are looking vor 'lsof', please go to following URL:

http://hpux.asknet.de

and search for 'lsof', I'm sure you will find a version for HPUX 11.00 (32bit).

Regards,
Armin

Re: Unix Command needed

T G Manikandan — Wed, 27 Nov 2002 10:13:39 GMT

for 32 bit its here

http://hpux.connect.org.uk/hppd/hpux/Sysadmin/lsof-4.64/

Re: Unix Command needed

Bokoko — Wed, 27 Nov 2002 12:09:44 GMT

I wrote named "BISLOCK". The purpose is to check if the PAYXTR.LIS file is opened by another User (file in the current directory : /consult/6/users/S.O. )

I'd like to combine the both commands "fuser" and "ps -pf" . would you assist me. This is the contain of the script "BISLOCK" which receives two parameters :

$1 = /consult/6/users/S.O.
$2 = PAYXTR.LIS

==============================================
i=0
directory=$1;export directory
payxtract=$2;export payxtract
files=`echo $directory"/"$payxtract`;export files

LOOP=y; export LOOP
#
while [ $LOOP = y ]
do
# -- Verify that $2 is not locked
by an Online User --

i=`ps -aef |grep $files|wc -l`

# if the return value is not 0 then
the file is in use.

if [[ $i != 0 ]]
then
{echo ERROR CYBMON Problem
Accessing File $2
sleep 20
}
else
LOOP=n; export LOOP
break
fi
#
done
#

Re: Unix Command needed

H.Merijn Brand (procura — Wed, 27 Nov 2002 12:18:04 GMT

As already said, fuser -c should be your base. Use it from a mount point, and it'll show all processes that use any file on the mounted file system.

lsof is the perfect tool - no, realy - to dig into problems you face. Both fuser and ps do not offer enough interface options to get to the bones. lsof does. Learn to use lsof. Install it yesterday.

Re: Unix Command needed

Darrell Allen — Wed, 27 Nov 2002 19:14:30 GMT

Hi,

If you want to see the busy files in a directory:
cd /directory
fuser * .??*

lsof is much more functional and returns more information than fuser however fuser works fine for simple checks.

Darrell